Cladding underlay
A cladding underlay should envelop the exterior walls prior to the cladding being fixed.
The cladding, 12.5 (1/2") plywood can then be fixed to the studs. All joins should be on a stud and with a gap of
3mm (1/8") between sheets.
The battens
Timber battens 75x25 (1x3) to go over each join. The battens should have a groove each side of the join to stop
water being drawn up by capillary action.
Extra battens can also be fixed to intermediate studs. This is for decorative purposes only.